Super-FRS Beam Tracking concept
Super-FRS beam tracking is a major Finnish in-kind contribution to FAIR. Super-FRS beam tracking contribution includes Gas Emission-Time Projection Chambers (GEM-TPC), Secondary Emission grid detectors (SEM-grid), Multi-Sampling Ionization Chambers (MUSICs) and drive ladders to operate both detector types. Together with the time-of-flight measurements these should provide unambiguous event-by-event particle identification.
Gas Emission-Time Projection Chamber detector is used for measurement of (x,y,z) position of slow extracted beam on the event-by-event basis. It should have near 100% tracking efficiency and stand counting rates up to 10 MHz.
More detailed information can be read from the following publications:
- GEM-TPC Trackers for the Super-FRS at FAIR – Cern
- Super-FRS GEM-TPC prototype development based on n-Xyter asic for the FAIR facility
Secondary electron EMission grid detector is used for beam profile measurement of high intensity beam.
Drive Ladders or actuators are used to operate both the GEM-TPC detectors and SEM Grid detectors. These will insert the detectors in beam when in operation and if required out from the beam axis.